selftest: DiskMonTest: use POSIX output for df

Without "-P" df  splits the output on multiple lines and breaks the test

(From OE-Core rev: 81a81807d34e4b2ea28d8ba9c29e5b48a14bbc1f)

Signed-off-by: Alexandru Palalau <alexandrux.palalau@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/lib/oeqa/selftest/buildoptions.py b/meta/lib/oeqa/selftest/buildoptions.py
index 93b02cf8a2..8ff40baddc 100644
--- a/meta/lib/oeqa/selftest/buildoptions.py
+++ b/meta/lib/oeqa/selftest/buildoptions.py
@@ -51,7 +51,7 @@ class ImageOptionsTests(oeSelfTest):
 class DiskMonTest(oeSelfTest):
 
     def test_stoptask_behavior(self):
-        result = runCmd("df -k %s" % os.getcwd())
+        result = runCmd("df -Pk %s" % os.getcwd())
         size = result.output.split("\n")[1].split()[3]
         self.write_config('BB_DISKMON_DIRS = "STOPTASKS,${TMPDIR},%sK,4510K"' % size)
         res = bitbake("m4", ignore_status = True)